91934244287 has 4 divisors (see below), whose sum is σ = 91935317376. Its totient is φ = 91933171200.

The previous prime is 91934244271. The next prime is 91934244301. The reversal of 91934244287 is 78244243919.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91934244287 - 2⁴ = 91934244271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91934244217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395714 + ... + 583487.

It is an arithmetic number, because the mean of its divisors is an integer number (22983829344).

Almost surely, 2^91934244287 is an apocalyptic number.

91934244287 is a deficient number, since it is larger than the sum of its proper divisors (1073089).

91934244287 is an equidigital number, since it uses as much as digits as its factorization.

91934244287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073088.

The product of its digits is 3483648, while the sum is 53.

The spelling of 91934244287 in words is "ninety-one billion, nine hundred thirty-four million, two hundred forty-four thousand, two hundred eighty-seven".